扩幅调制的发展,语音发声时间,以及在噪音和反响中对音符的识别
Z Ellen Peng1, Vijayalakshmi Easwar1
1Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.
The Journal of the Acoustical Society of America
|February 11, 2024
概括
儿童在杂,反响的环境中难以理解语言. 他们的使用时间声学线索的能力,如振幅调制 (AM) 和语音发声时间 (VOT),在11-14岁时发展,突出了年幼儿童需要良好的声学.
科学领域:
- 听觉感知是一种听觉感知.
- 语音处理 语音处理
- 发展心理学 发展心理学
背景情况:
- 儿童的语音理解容易受到噪音和回声的影响.
- 时间声学线索,包括振幅调制 (AM) 和语音发声时间 (VOT),对于处理扭曲的语音至关重要.
- 在儿童中使用这些线索的发展轨迹仍然不清楚.
研究的目的:
- 研究AM深度检测,VOT分类感知和6-14岁儿童的辅音识别的发展.
- 评估语音形式噪音 (SSN) 和回声对这些听觉技能的影响.
- 为了确定儿童在不利的声学条件下达到成年人的表现的年龄.
主要方法:
- 与6至14岁的儿童进行了三项实验.
- 实验I:在母音中进行AM深度检测.
- 实验二:对VOT的分类感知.
- 实验III:在安静,SSN和轻微的反响中识别辅音.
主要成果:
- 对于儿童来说,AM深度检测是具有挑战性的,尤其是声学扭曲.
- 随着SSN的增加,VOT暗示符的突出性下降,并且通过轻微的反响消除了它在辅音歧视中的使用.
- 11-14岁的儿童在不利的声学条件下在辅音歧视和识别方面表现接近成年人.
结论:
- 儿童使用时空声学线索进行语音感知的能力在6岁至14岁之间显著发展.
- 轻微的反响严重影响辅音识别,甚至比中度噪音更严重.
- 最佳的声学环境对于支持幼儿的听力技能发展至关重要.
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